RIM said that they would open up submissions of BlackBerry 10 apps to BlackBerry App World on October 10th. (Cleverly that falls out as 10/10) Well now they have followed through and developers can now submit apps to BlackBerry App World targeting BlackBerry 10 devices. According to the announcement, apps that are submitted from today on are guaranteed to be reviewed tested and ready for publishing before BlackBerry 10 launches. RIM recommends devs get their apps in during October and November with preferred carousel placements going to early submissions as a thank you. Keep in mind that you nee to be using the Beta3 developer SDKs to submit.